Power-transmitting device



(No Model.)

D. A. JAMES. POWER TRANSMITTING DEVICE.

No. 561,953. Patented June 9, 1896.

ANDRRW 8.6RANAMJflOTOMTHQWASHINETOKDE.

UNITED STATES PATENT QEETCE.

DAVID A. JAMES, OF LAWVRENOEBURG, INDIANA.

POWER-TRANSMITTING DEVICE.

SFIEGIFIGATION forming part of Letters Patent No. 561,953, dated June 9,1896.

Application filed Gctober 7, 1895.

To all 1072,0171 it may concern: I

Be it known that I, DAVID A. JAMES, a citizen of the United States,residing at Lawreneeburg, Indiana, have. invented new and usefulImprovements in Power-Transmitting Devices, of which the following is aspecification.

My invention relates to movable powertransmitiing devices, havingreference to an apparatus whereby power may be transmitted to a numberof points successively in series from a given source as occasionrequires.

To this end it consists in the apparatus hereinafter described, whereina shaft-carriage movable upon supporting-ways and adapted to be shiftedat will to any desired position thereon is maintained in rotativerelation with a driving-pulley, engaged or disengaged, as desired.

It c0nsists,further, in the certain constructive features whereby theapparatus may be moved to and retained in any desired position andthrown into or out of operation as required.

Mechanism embodying my invention is illustrated in the accompanyingdrawings, in which Figure 1 is a plan view, and Fig. 2 a partial sideelevation, of myimprovement as adapted to a factory or workshop wherepower is required alternately at a series of work-hen ches. Fig. 3 is acrosssection of the trackway and shaft-carriage, showing structuralfeatures. Fig. 4: is a detail view of the catch device attached to thecarriage.

Referring now to the drawings, A A designate the parallel rails of asupporting-trackway suspended from a eeilin g or side wall by brackets13, and C a carriage traveling on and between the tracks, upon which itmay be carried and held by friction-rollers c c. In the carriage, whichis simply a bearing-frame of any convenient construction, a verticalshaft 5 is journaled in relatively permanent bearings and is providedwith a fixed pulley p and a loose pulley 12 adjacent, both carried on anextension of the shaft above the earriage C. To the lower end of theshaft 8 is attached an extension-such, for example, as a flexible shaft7) or any other means of transmitting the power adapted to the occa- Inthe present case a drill a: is shown sion.

$erial No. 564,837. (No model.)

attached to the terminal of the shaft Z) to .be used for boring at thebench. A second vertical shaft or stud s is also journaled in thecarriage, adapted to be moved vertically, and carries a loose pulley pat its upper end above the carriage and is provided at its lowerterminal with a handle f, by which it maybe elevated, carrying thepulley p with it. To sustain it in its elevated position, the shaft 3 isprovided nearits lower end with a radial projection 12 and the aperturein the lower wall of the carriage through which it passes is providedwith a correspondingly radial enlargement, so that by elevating theshaft, passing the radial projection through the enlargement, and givingthe shaft a partial rotation the projection rests on the lower wall ofthe carriage and sustains the shaft in its elevated position. A reversalof this operation lowers it. The object of this construction will bepresently explained.

At one end of the traekway is journaled a driving-pulley D, (which maybe upon the ordinary line-shaft of a factory,) and on the trackway nearthe opposite end is a movable tension-carriage E, from which projectsupwardly a vertical stud or spindle carrying a belt-pulley F. Thecarriage is held bya cord or chain g", passing outward over a fixedsheave g, and carrying a weight V at its outer terminal to keep thecarriage under constant stress in that direction.

An endless belt G from the driving-pulley D passes at one side of thecarriage 0 directly to and around the pulley F upon the tension-carriageE, and at the other is carried in a reverse bight first around thepulley p and thence around the pulley p, thence to the pulley F, thuscommunicating the driving power to the pulley p and its shaft 8.

It may now be explained that upon elevating the shaft or stud s wit-hitspulley 29 the belt is carried to the loose pulley p and the shaft 3 nolonger operated, the pulley p having the double function of an idler forchanging the direction of the belt I) to bring it into proper relationswith the pulley p and also as a belt-shifter to discontinue theapplication of power when not required.

In order to move the carriage C with convenience, I attach to the underside of the IOC carriage O, in position to engage through a less beltoperating normally parallel with the suitable opening or recess in thecarriage trackway and carried upon pulleys at oppowith notches at theunder side of the tracksite ends of the trackway and in opposite Way, apivoted dog or catch 7t, provided with bights around the pulleys uponthe carria e; 5 5 5 a weight or spring at the outer end, and to and atransmitting device attached to one of overbalance the same and bringits head or the vertical shafts of the carriage, SllbSDt in shorter endinto notches suitably provided at tially as set forth. the under side ifthe trackway. In lieu of In a power-transmitting device of the notchesthehead may be provid ed with a camcharacter indicated, the combinationof a can 6 surface to engage the underside of the trackriage carriedupon a supporting-trackway, a way by wedging friction. A card or chaina, shaft vertically journaled therein carrying a attached to the shortend of the dog, hangs fast and a loose pulley, a second shaft or studdown within convenient reach of the attendupon the carriage and carryingan idler-pulant and. furnishes a means fcr disengaging ley, an endlessbelt carried upon pulleys at 3 1 the dog and drawing the carri tge toany conopposite ends of the trackway and in opposite venient point, andup n its release the dog bights around the shaft-pulleys of thecarautomatically engages and retains the carriage, and means forshifting the belt while riage in position. in operation from the fast tothe loose pulley The mode of operation is as follows: The or vice isa,sul stantially as set forth. "-0 2c shifter-pulley1:) stands norm 1.113in its ele- In a power-transmitting device of ih vated position, withthe belt G operating the characte r indioat ad, the combination of a carloose pulley 1:1 The (arriage O is moved to riage car ied uponasupporting-fraine, as mi 1 the desired position by the card or chain a,vertioall Y journaled therein carrying a his whereupon the handle f ismanipulated to and loose pulley, a second shaft or stud upon 75 5 lowerthe pulley 11 so that the belt engages the rri e and carrying anidler-pulley, an the shaft 5', and the power is transmitted endless beltoarr ed upon pulleys at oppr sit thence by the flexible shaft to thetool 00 or ends of the trackway and in opposite bights other device tobe operated. IVhe'n the ob around the shaft-pulley of the carriage, an Iject of use is accomplished, the handle f is means for elevating ordepressing the flanged 5c 0 again manipulated to elevate the pulley ppulley of the carriage to shift the belt to the and the belt is shiftedto the loose pulley 1J2, fast or loose pulley of the first-moi ti nelthereby discontinuing the rotation of the shaft, substantially as setforth. shaft 5-. The flexible shaft f may be then, i. In a movablepower-transmitting levice, for convenience, hung upon the handle f, thecombination ofatraokway, adrivingpulas shown in the drawings, and thecarriage ley at one end of the same, a tension-pulle allowed to stand orbe moved out of the way near the opposite endprovided with means until anew occasion for use arises. The tenfor holding it away from thedriving-pulley, sion device always keeps the belt taut upon anendlessbelt carried around the tons on an I the pulleys. drivingpulleys, a shaft-carriage movable 9o 40 I may instead of giving thepulley p the upon the trackway between the driving and function of ashifter by its vertical adjusttension pulleys, a shaft and pulley, andan ment employ any ordinary bolt-shifting deadjacent idler upon thecarriage, carrying the vice. belt in a reverse bight, substantially asset I claim as my invention and desire to secure forth. 9 5 by LettersPatent of the United States- In testimony whereof I have hereunto set 1.The movable power-transmitting appamy hand in the presence of twosubscribing ratus, embodying a trackway, attached to a witnesses.permanentsupport; ashaft-carriage movable DAVID A. JAMES. thereon, andmeans for moving and securing lVitnesses: the same; two shafts providedwith pulleys L. M. HOSEA,

and carried upon the shaft-carriage; an end- FRANK K. BOWMAN.

